Accounting machine



Feb. 6, 1951 J. T. DAVIDSON ET AL 2,540,189

ACCOUNTING MACHINE Original Filed March 3, 1944 20 Sheets-Sheet l JOHN T. DAVIDSON PAUL H WILLIAMS & LAURENCE N. LEHMAN THE/Fr ATTORNEY Feb. 6, 1951 J. T. DAVIDSON ET AL 2,540,189

ACCOUNTING MACHINE Original Filed March 3, 1944 20 Sheets-Sheet 5 JOHN T. DAVIDSON PAUL H. WILLIAMS a LAURENCE N. LEHMAN IN VE N 70/?5 THE/H ATTORNEY Feb. 6, 1951 J. T. DAVIDSON ET AL ACCOUNTING MACHINE 2O Sheets-Sheet 4 Original Filed March 3, 1944 2m 2m 5m THE/RATTORNEY Feb. 6, 1951 J. r. DAVIDSON ET AL ACCOUNTING MACHINE 2O Sheets-Sheet 5 Original Filed March 3, 1944 JOHN T. DAVIDSON PAUL H) WILLIAMS U m m A m m Feb. 6, 1951 J. T. DAVIDSON ET AL ACCOUNTING MACHINE 2O Sheets-Sheet 6 Original Filed March 3, 1944 FIG.|3

FIGJI SUBTRAGT LHAL BALANCE OF 0. SUB. BAL.OF O B. TOTAL JOHN T. DAVIDSON PAUL H. WILLIAMS &

LAURENCE N. LEHMAN m/ VE/Vi'O/EPS TrlF/R A TTOR/VEY Feb. 6, 1951 J. T. DAVIDSON ET AL ACCOUNTING MACHINE Original Filed March 5, 1944 20 Sheets-Sheet 7 JOHN T. DAVIDSON PAUL H WILLIAMS & LAURENCE N. LEHMAN IIVI/ENTORS THE/R A TTO/P/VE Y Feb. 6, 1951 J. T. DAVIDSON ET AL ACCOUNTING MACHINE 2O Sheets-Sheet 8 Original Filed March 3, 1944 wmw m JOHN T. DAVIDSON PAUL H. WILLIAMS 8\ N A M H E L N E C N E R U A L WM v/ E U N m T T A m m Feb. 6, 1951 J. T. DAVIDSON ET AL 2,540,189

ACCOUNTING MACHINE Original Filed March 3, 1944 20 Sheets-Sheet 9 PAUL H. WILLIAMS & in LAURENCE N. LEHMAN "BYM Feb. 6, 1951 .J. T. DAVIDSON ET AL ACCOUNTING MACHINE 2O SheetsSheet 10 Original Filed March 3, 1944 Feb. 6, 1951 J. T. DAVIDSON ET AL %189.

ACCOUNTING MACHINE Feb. 6, 1951 J. T. DAVIDSON ET AL 2,540,189

ACCOUNTING MACHINE Original File d March 3, 1944 20 Sheets-Sheet 12 see vQ HOME ENGAGE SUBTRACT sua TOTAL a TOTAL. 1

I-ENGAGE. ADD.

DISEN GAGE 5U BTRACT 8| TOTAL.

HOME DISENGAGE ADD\ JOHN T. DAVIDSON PAUL H. WILLIAMS a LAURENCE N. LEHMAN ESUB TOTAL. lNVE/VTORS THE/R A 7'TOR/VE Y Feb. 6, 1951 J. T. DAWSON ET AL 2,540,189

ACCOUNTING MACHINE Original Filed March 3, 1944 20 Sheets-Sheet 15 FIG.28

Q (I 371 400 40 V 372 son 6l0 Q 600 608 9 e09 I; 3' I 400 604 U 606 F I 25 40 (so? ss JOHN T. DAVIDSON PAUL H WILLIAMS a LAURENCE N. LEHMAN Feb. 6, 1951 J. T. DAVIDSON ET AL ACCOUNTING MACHINE 2O Sheets-Sheet 14 Original Filed March 5, 1944 JOHN T DAVIDSON PAUL H. WILLIAMS LAURENCE N. LEHMAN //Vl /V7'0RS By THE/r A TTORIVEY Feb. 6, 1951 J. T. DAVIDSON ET AL ACCOUNTING MACHINE 2O Sheets-Sheet 15 Original Filed March 3, 1944 JOHN T DAVIDSON PAUL H. WILLIAMS 8.

LAURENCE N. LEHMAN I/VVE/VTORS mmdE mm mmp Feb. 6, 1951 J. T. DAVIDSON ET AL 2,540,189

ACCOUNTING MACHINE Original Filed March 3, 1944 20 Sheets-Sheet 16 JOHN T. DAVIDSON PAUL H. WILLIAMS 8: LAURENCE N. LEHMAN Feb. 6, 1951 J. T. DAVIDSON ET AL 2,540,189

ACCOUNTING MACHINE Original Filed March 3, 1944 20 Sheets-Sheet l7 FIG 37 JOHN T. DAVIDSON PAUL H. WILLIAMS 8\ LAURENCE N. LEHMAN THE/R A TTOR/VE) Feb. 6, 1951 J DAVIDSON ET AL 2,540,183

ACCOUNTING MACHINE Original Filed March 3, 1944 20 Sheets-Sheet l8 JOHN T DAWDSON PAUL H. WlLLiAMS 8i LAURENCI: N. LEHMAN l/V MEN TORS Feb. 6, 1951 J. T. DAVIDSON ET AL ACCOUNTING MACHINE 20Sheets-Sheet 19 Original Filed March 3, 1944 wa .ML

THE/f? A TTOR/VE) Feb. 6, 1951 Original Filed March 3, 1944 FIG.47

CAM 55B.

BTRACT FIG. 8 B

J. T. DAVIDSON ET AL ACCOUNTING MACHINE 20 Sheets-Sheet 2O THHRATTORNE) 

